How are mri and pet scans used in medicine

stanfordhealthcare.orgPET scans are often used with CT or MRI scans to help make a diagnosis or to get more data about a health condition and the progress of any treatment. While an MRI or CT scan shows how part of the body looks, a PET scan can reveal how it is functioning.

What is a PET MRI scan?

PET/MRI Scan. A PET/MRI scan is a two-in-one test that combines images from a positron emission tomography (PET) scan and a magnetic resonance imaging (MRI) scan. This new hybrid technology harnesses the strengths of PET and MRI to produce some of the most highly detailed pictures of the inside of your body currently available.

What is a magnetic resonance scan?

A magnetic resonance imaging (MRI) scan is a common procedure around the world. MRI uses a strong magnetic field and radio waves to create detailed images of the organs and tissues within the…

Can PET scan and MRI scan be merged?

PET and MRI scans have been conducted separately, and the separate images later merged. That merger, however, requires a complex computer process. At Stanford, our newly-available PET/MRI scanner can perform both types of scans at the same time to gather more information than merged PET and MRI scans.

Can a MRI and a PET scan be done at the same time?

If you need both an MRI and a PET scan, they can be done at the same time in newer MRI/PET machines. If you have metal, medical implants, tattoos, experience claustrophobia, or may be pregnant, you should notify your healthcare provider before getting an MRI, PET, or CT scan. Last medically reviewed on December 20, 2019

What to expect when your dog needs a MRI?

For an MRI, the dog is given a general anesthetic to keep him still, and is placed inside a giant magnet that sends radio waves into his body. When the magnet is turned off, the body releases the radio waves, and the computer uses them to make an image of the body.

What is the difference between a pet and a fMRI scan?

PET scanning is disadvantaged compared to fMRI because the resolution of the scans is lower. PET scans can measure changes in blood flow in the brain in an area of about 5-10 cubic millimeters. fMRI can resolve down to 3 cubic millimeters and even lower as the machines become more powerful.

Why is my doctor recommending a PET scan?

A PET scan is an effective way to examine the chemical activity in parts of your body. It may help identify a variety of conditions, including many cancers, heart disease and brain disorders.

What are the risks of PET scan?

PET scans, CT scans, and PET-CT scans do have risks. One risk is radiation exposure. The radiation exposure from a PET-CT scan is similar to a total-body CT scan done with a contrast medium.